Ranma decides to use the Nanban mirror to go back in time and fix the problems from his failed marriage, however the mirror is cracked and it takes him to the moon kingdom where he kills a Youma about to attack princess Serenity. He vanishes again, reappearing in a city still on the moon he is attacked by sailor Pluto and the mirror shatters beyond repair. He is arrested and taken to the queen where he finds the girl he rescued 30 years ago. Ranma causes chaos with the Senshi that amuses the queen and he is given back the mirror that will send him to differant times until his task is complete. (Sailor Moon Crossover)